Positioning method and apparatus

Abstract

Embodiments of the present disclosure provide a positioning method and apparatus. The positioning method includes: sending, by a serving base station, a terminal side measurement request based on a positioning node reference signal to a target terminal according to configuration information of the positioning node reference signal; performing, by the serving base station, a base station side measurement based on the positioning node reference signal, and obtaining base station side measurement information based on the positioning node reference signal; and then sending terminal side measurement information based on the positioning node reference signal and the base station side measurement information based on the positioning node reference signal to a location server, so that the location server calculates location information of the target terminal.

What is claimed is: 
     
       1. A base station, comprising:
 a transmitter, configured to send, after a location measurement request is received from a location server a terminal side measurement request based on a positioning node reference signal to a target terminal according to configuration information of the positioning node reference signal, wherein the target terminal is in a scenario in which a plurality of positioning nodes shares a same cell identity, wherein the configuration information of the positioning node reference signal comprises a transmission timing of the positioning node reference signal, a transmission period of the positioning node reference signal, and a frequency-domain transmission position of the positioning node reference signal, and wherein the configuration information of the positioning node reference signal further comprises a positioning node identity or a positioning node reference signal identity; 
 a receiver, configured to receive, from the target terminal, terminal side measurement information based on the positioning node reference signal; and 
 a processor, configured to perform a base station side measurement based on the positioning node reference signal, and obtain base station side measurement information based on the positioning node reference signal; 
 wherein the transmitter is further configured to send the terminal side measurement information based on the positioning node reference signal and the base station side measurement information based on the positioning node reference signal to the location server, wherein the terminal side measurement information and the base station side measurement information are for the location server to calculate location information of the target terminal. 
 
     
     
       2. The base station according to  claim 1 , wherein the processor is further configured to:
 before the transmitter sends the terminal side measurement request based on the positioning node reference signal to the target terminal according to the configuration information of the positioning node reference signal, determine whether the positioning node reference signal has been configured for the target terminal; and 
 in response to determining that the processor has configured the positioning node reference signal for the target terminal, the transmitter is configured to send the terminal side measurement request based on the positioning node reference signal to the target terminal according to the configuration information of the configured positioning node reference signal; or 
 in response to determining that the processor has not configured the positioning node reference signal for the target terminal, the transmitter is further configured to:
 send the configuration information of the positioning node reference signal to the target terminal; and 
 send the terminal side measurement request based on the positioning node reference signal to the target terminal according to the configuration information that is of the positioning node reference signal and sent to the target terminal. 
 
 
     
     
       3. The base station according to  claim 1 , wherein the processor is further configured to determine, after the receiver receives the location measurement request from the location server, that the target terminal is in the scenario in which a plurality of positioning nodes shares the same cell identity. 
     
     
       4. The base station according to  claim 1 , wherein the terminal side measurement information based on the positioning node reference signal comprises the cell identity, the positioning node identity or positioning node reference signal identity, and a terminal side reception-transmission time difference corresponding to the positioning node identity or positioning node reference signal identity; and
 the base station side measurement information based on the positioning node reference signal comprises the cell identity, the positioning node identity or positioning node reference signal identity, and a base station side reception-transmission time difference corresponding to the positioning node identity or positioning node reference signal identity, or, the cell identity, the positioning node identity or positioning node reference signal identity, a base station side reception-transmission time difference corresponding to the positioning node identity or positioning node reference signal identity, and an angle of arrival of a received signal transmitted by the target terminal. 
 
     
     
       5. The base station according to  claim 1 , wherein the positioning node reference signal is a channel state information-reference signal (CSI-RS). 
     
     
       6. A device the device comprising:
 a receiver, configured to receive a terminal side measurement request that is based on a positioning node reference signal and from a positioning apparatus according to configuration information of the positioning node reference signal, wherein the device is in a scenario in which a plurality of positioning nodes shares a same cell identity, wherein the configuration information of the positioning node reference signal comprises a transmission timing of the positioning node reference signal, a transmission period of the positioning node reference signal, and a frequency-domain transmission position of the positioning node reference signal, and wherein the positioning node reference signal further comprises a positioning node identity or a positioning node reference signal identity; 
 a processor, configured to perform, according to the terminal side measurement request, a terminal side measurement based on the positioning node reference signal; and 
 a transmitter, configured to send terminal side measurement information based on the positioning node reference signal to the positioning apparatus. 
 
     
     
       7. The device according to  claim 6 , wherein the positioning apparatus is a serving base station, and the receiver is further configured to:
 receive the configuration information that is of the positioning node reference signal and from the serving base station. 
 
     
     
       8. The device according to  claim 6 , wherein the positioning apparatus is a location server. 
     
     
       9. The device according to  claim 6 , wherein the terminal side measurement information based on the positioning node reference signal comprises a cell identity, the positioning node identity or positioning node reference signal identity, and a terminal side reception-transmission time difference corresponding to the positioning node identity or positioning node reference signal identity. 
     
     
       10. The device according to  claim 6 , wherein the positioning node reference signal is a channel state information-reference signal (CSI-RS). 
     
     
       11. A location server for positioning a terminal, the location server comprising:
 a transmitter, configured to send a base station side measurement request based on a positioning node reference signal to a serving base station of a target according to configuration information of the positioning node reference signal, and send a terminal side measurement request based on the positioning node reference signal to the target terminal, wherein the terminal is in a scenario in which a plurality of positioning nodes shares a same cell identity, wherein the configuration information of the positioning node reference signal comprises a transmission timing of the positioning node reference signal, a transmission period of the positioning node reference signal, and a frequency-domain transmission position of the positioning node reference signal, and wherein the positioning node reference signal further comprises a positioning node identity or a positioning node reference signal identity; 
 a receiver, configured to receive base station side measurement information based on the positioning node reference signal and sent by the serving base station, and receive terminal side measurement information based on the positioning node reference signal and sent by the target terminal; and 
 a processor, configured to calculate location information of the target according to the base station side measurement information based on the positioning node reference signal and the terminal side measurement information based on the positioning node reference signal. 
 
     
     
       12. The location server according to  claim 11 , wherein the transmitter is further configured to:
 before sending the base station side measurement request based on the positioning node reference signal to the serving base station of the target terminal, send a request for the configuration information of the positioning node reference signal to the serving base station; and 
 wherein the receiver is further configured to:
 receive the configuration information that is of the positioning node reference signal of the target terminal and from the serving base station. 
 
 
     
     
       13. The location server according to  claim 11 , wherein the transmitter is further configured to:
 send, to the serving base station, a query request used to confirm whether a plurality of positioning nodes shares a same cell identity within coverage of the serving base station; and 
 the receiver is further configured to receive confirmation information sent by the serving base station and used to indicate that the same cell identity is shared by the plurality of positioning nodes within the coverage of the serving base station. 
 
     
     
       14. The location server according to  claim 11 , wherein the terminal side measurement information based on the positioning node reference signal comprises the cell identity, the positioning node identity or positioning node reference signal identity, and a terminal side reception-transmission time difference corresponding to the positioning node identity or positioning node reference signal identity; and
 the base station side measurement information based on the positioning node reference signal comprises the cell identity, the positioning node identity or positioning node reference signal identity, and a base station side reception-transmission time difference corresponding to the positioning node identity or positioning node reference signal identity, or, the cell identity, the positioning node identity or positioning node reference signal identity, a base station side reception-transmission time difference corresponding to the positioning node identity or positioning node reference signal identity, and an angle of arrival of a received signal transmitted by the target terminal. 
 
     
     
       15. The location server according to  claim 11 , wherein the positioning node reference signal is a channel state information-reference signal (CSI-RS). 
     
     
       16. The base station according to  claim 1 , wherein the configuration information of the positioning node reference signal further comprises antenna port information. 
     
     
       17. The device according to  claim 6 , wherein the configuration information of the positioning node reference signal further comprises antenna port information. 
     
     
       18. The location server according to  claim 11 , wherein the configuration information of the positioning node reference signal further comprises antenna port information.